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Business and Geographic Segments - Total Assets Held by Business Segments (Detail) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Segment Reporting Information [Line Items]      
Total assets $ 2,737.0 $ 2,835.7 $ 3,005.2
Depreciation And Amortization 54.1 58.5 59.3
Capital expenditures 48.5 67.6 64.1
Corporate and eliminations      
Segment Reporting Information [Line Items]      
Total assets 197.8 191.7 226.4
Chemicals | Operating Segment      
Segment Reporting Information [Line Items]      
Total assets 2,196.8 2,293.5 2,373.1
Depreciation And Amortization 49.9 53.1 52.8
Capital expenditures 47.4 63.2 58.6
Component products | Operating Segment      
Segment Reporting Information [Line Items]      
Total assets 141.5 131.3 146.4
Depreciation And Amortization 4.0 4.0 3.8
Capital expenditures 1.1 3.7 4.1
Real estate management and development | Operating Segment      
Segment Reporting Information [Line Items]      
Total assets 200.9 219.2 259.3
Depreciation And Amortization $ 0.2 1.4 2.7
Capital expenditures   $ 0.7 $ 1.4